diff --git a/[refs] b/[refs]
index 30e382405238..f446e4b437a6 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bd26bfc5b4253425d17aa49648ae1f3e976041c4
+refs/heads/master: cdd67a74603d0453ddffc24c572aed2ddd1795b8
diff --git a/trunk/drivers/block/drbd/drbd_worker.c b/trunk/drivers/block/drbd/drbd_worker.c
index 44bf6d11197e..0bbecf45b485 100644
--- a/trunk/drivers/block/drbd/drbd_worker.c
+++ b/trunk/drivers/block/drbd/drbd_worker.c
@@ -414,6 +414,18 @@ void resync_timer_fn(unsigned long data)
 		drbd_queue_work(&mdev->data.work, &mdev->resync_work);
 }
 
+static int calc_resync_rate(struct drbd_conf *mdev)
+{
+	int d = mdev->data_delay / 1000; /* us -> ms */
+	int td = mdev->sync_conf.throttle_th * 100;  /* 0.1s -> ms */
+	int hd = mdev->sync_conf.hold_off_th * 100;  /* 0.1s -> ms */
+	int cr = mdev->sync_conf.rate;
+
+	return d <= td ? cr :
+		d >= hd ? 0 :
+		cr + (cr * (td - d) / (hd - td));
+}
+
 int w_make_resync_request(struct drbd_conf *mdev,
 		struct drbd_work *w, int cancel)
 {
@@ -446,7 +458,8 @@ int w_make_resync_request(struct drbd_conf *mdev,
 		return 1;
 	}
 
-	number = SLEEP_TIME * mdev->sync_conf.rate / ((BM_BLOCK_SIZE/1024)*HZ);
+	mdev->c_sync_rate = calc_resync_rate(mdev);
+	number = SLEEP_TIME * mdev->c_sync_rate  / ((BM_BLOCK_SIZE / 1024) * HZ);
 	pe = atomic_read(&mdev->rs_pending_cnt);
 
 	mutex_lock(&mdev->data.mutex);